Update a buddypress’s plugin

Someone has developed a buddypress plugin for me.
This plugin is working only with BP 1.0.8 and I would like someone to update it in order to run it with the last version of BP
A website is online to show what this plugin does. It mostly about creating a specific form during a group establishment
Now, some free plugins are doing what I asked for two years ago Hence, one part of my plugin can be deleted.
I would like someone who can later update this plugin to the future version of buddypress

Please, do not hesitate to ask me if you have any questions regarding the plugin